[baby yorkie]

Is there anything I should be watching for, other than difficulty breathing, if my baby (Tia/10 months/5lb 3 oz) got in ants? She came to me a few mintues ago, rubbing her face on a rug, looked kinda jumpy, so I tried to pick her up, and she ran to her bed. I started looking and about five or so ants crawled off of her. I grabbed her up and threw her in the laundry tub, clothes and all, and started washing. I gave her some Benadryl, then dried her off. The vet's office said one ml of Benadryl per lb. That seems a lot to me. I was watching her and Ally play outside, but didn't see the ants. I'm going to search the yard now. She is playing/running around the house now with Ally and doesn't seemed bothered, but I'll keep a close eye on her. Any info and/or prior experience would be greatly appreciated!